/* * Copyright 2006, 2007, 2008, 2009, 2010 Fluendo S.A. * Authors: Jan Schmidt * Kapil Agrawal * Julien Moutte * * Copyright (C) 2011 Jan Schmidt * * This library is licensed under 4 different licenses and you * can choose to use it under the terms of any one of them. The * four licenses are the MPL 1.1, the LGPL, the GPL and the MIT * license. * * MPL: * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/. * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * LGPL: * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. * * GPL: * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. * * MIT: * * Unless otherwise indicated, Source Code is licensed under MIT license. * See further explanation attached in License Statement (distributed in the file * LICENSE). * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is furnished to do * so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #include #include #include #include #include #include #include #include #include "gstbasetsmux.h" #include "gstbasetsmuxaac.h" #include "gstbasetsmuxttxt.h" #include "gstbasetsmuxopus.h" #include "gstbasetsmuxjpeg2000.h" GST_DEBUG_CATEGORY (gst_base_ts_mux_debug); #define GST_CAT_DEFAULT gst_base_ts_mux_debug /* GstBaseTsMuxPad */ G_DEFINE_TYPE (GstBaseTsMuxPad, gst_base_ts_mux_pad, GST_TYPE_AGGREGATOR_PAD); /* Internals */ static void gst_base_ts_mux_pad_reset (GstBaseTsMuxPad * pad) { pad->dts = GST_CLOCK_STIME_NONE; pad->prog_id = -1; if (pad->free_func) pad->free_func (pad->prepare_data); pad->prepare_data = NULL; pad->prepare_func = NULL; pad->free_func = NULL; if (pad->codec_data) gst_buffer_replace (&pad->codec_data, NULL); /* reference owned elsewhere */ pad->stream = NULL; pad->prog = NULL; if (pad->language) { g_free (pad->language); pad->language = NULL; } } /* GstAggregatorPad implementation */ static GstFlowReturn gst_base_ts_mux_pad_flush (GstAggregatorPad * agg_pad, GstAggregator * agg) { GList *cur; GstBaseTsMux *mux = GST_BASE_TS_MUX (agg); /* Send initial segments again after a flush-stop, and also resend the * header sections */ mux->first = TRUE; /* output PAT, SI tables */ tsmux_resend_pat (mux->tsmux); tsmux_resend_si (mux->tsmux); /* output PMT for each program */ for (cur = mux->tsmux->programs; cur; cur = cur->next) { TsMuxProgram *program = (TsMuxProgram *) cur->data; tsmux_resend_pmt (program); } return GST_FLOW_OK; } /* GObject implementation */ static void gst_base_ts_mux_pad_dispose (GObject * obj) { GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (obj); gst_base_ts_mux_pad_reset (ts_pad); G_OBJECT_CLASS (gst_base_ts_mux_pad_parent_class)->dispose (obj); } static void gst_base_ts_mux_pad_class_init (GstBaseTsMuxPadClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstAggregatorPadClass *gstaggpad_class = GST_AGGREGATOR_PAD_CLASS (klass); gobject_class->dispose = gst_base_ts_mux_pad_dispose; gstaggpad_class->flush = gst_base_ts_mux_pad_flush; gst_type_mark_as_plugin_api (GST_TYPE_BASE_TS_MUX, 0); } static void gst_base_ts_mux_pad_init (GstBaseTsMuxPad * vaggpad) { } /* GstBaseTsMux */ enum { PROP_0, PROP_PROG_MAP, PROP_PAT_INTERVAL, PROP_PMT_INTERVAL, PROP_ALIGNMENT, PROP_SI_INTERVAL, PROP_BITRATE, PROP_PCR_INTERVAL, PROP_SCTE_35_PID, PROP_SCTE_35_NULL_INTERVAL }; #define DEFAULT_SCTE_35_PID 0 #define BASETSMUX_DEFAULT_ALIGNMENT -1 #define CLOCK_BASE 9LL #define CLOCK_FREQ (CLOCK_BASE * 10000) /* 90 kHz PTS clock */ #define CLOCK_FREQ_SCR (CLOCK_FREQ * 300) /* 27 MHz SCR clock */ #define GSTTIME_TO_MPEGTIME(time) \ (((time) > 0 ? (gint64) 1 : (gint64) -1) * \ (gint64) gst_util_uint64_scale (ABS(time), CLOCK_BASE, GST_MSECOND/10)) /* 27 MHz SCR conversions: */ #define MPEG_SYS_TIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \ GST_USECOND, CLOCK_FREQ_SCR / 1000000)) #define GSTTIME_TO_MPEG_SYS_TIME(time) (gst_util_uint64_scale ((time), \ CLOCK_FREQ_SCR / 1000000, GST_USECOND)) #define DEFAULT_PROG_ID 0 static GstStaticPadTemplate gst_base_ts_mux_src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/mpegts, " "systemstream = (boolean) true, " "packetsize = (int) { 188, 192} ") ); typedef struct { GstMapInfo map_info; GstBuffer *buffer; } StreamData; G_DEFINE_TYPE (GstBaseTsMux, gst_base_ts_mux, GST_TYPE_AGGREGATOR); /* Internals */ /* Takes over the ref on the buffer */ static StreamData * stream_data_new (GstBuffer * buffer) { StreamData *res = g_new (StreamData, 1); res->buffer = buffer; gst_buffer_map (buffer, &(res->map_info), GST_MAP_READ); return res; } static void stream_data_free (StreamData * data) { if (data) { gst_buffer_unmap (data->buffer, &data->map_info); gst_buffer_unref (data->buffer); g_free (data); } } #define parent_class gst_base_ts_mux_parent_class static void gst_base_ts_mux_set_header_on_caps (GstBaseTsMux * mux) { GstBuffer *buf; GstStructure *structure; GValue array = { 0 }; GValue value = { 0 }; GstCaps *caps; caps = gst_caps_make_writable (gst_pad_get_current_caps (GST_AGGREGATOR_SRC_PAD (mux))); structure = gst_caps_get_structure (caps, 0); g_value_init (&array, GST_TYPE_ARRAY); GST_LOG_OBJECT (mux, "setting %u packets into streamheader", g_queue_get_length (&mux->streamheader)); while ((buf = GST_BUFFER (g_queue_pop_head (&mux->streamheader)))) { g_value_init (&value, GST_TYPE_BUFFER); gst_value_take_buffer (&value, buf); gst_value_array_append_value (&array, &value); g_value_unset (&value); } gst_structure_set_value (structure, "streamheader", &array); gst_aggregator_set_src_caps (GST_AGGREGATOR (mux), caps); g_value_unset (&array); gst_caps_unref (caps); } static gboolean steal_si_section (GstMpegtsSectionType * type, TsMuxSection * section, TsMux * mux) { g_hash_table_insert (mux->si_sections, type, section); return TRUE; } static void gst_base_ts_mux_reset (GstBaseTsMux * mux, gboolean alloc) { GstBuffer *buf; GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux); GHashTable *si_sections = NULL; GList *l; mux->first = TRUE; mux->last_flow_ret = GST_FLOW_OK; mux->last_ts = 0; mux->is_delta = TRUE; mux->is_header = FALSE; mux->streamheader_sent = FALSE; mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE; gst_event_replace (&mux->force_key_unit_event, NULL); if (mux->out_adapter) gst_adapter_clear (mux->out_adapter); if (mux->tsmux) { if (mux->tsmux->si_sections) si_sections = g_hash_table_ref (mux->tsmux->si_sections); tsmux_free (mux->tsmux); mux->tsmux = NULL; } if (mux->programs) { g_hash_table_destroy (mux->programs); } mux->programs = g_hash_table_new (g_direct_hash, g_direct_equal); while ((buf = GST_BUFFER (g_queue_pop_head (&mux->streamheader)))) gst_buffer_unref (buf); gst_event_replace (&mux->force_key_unit_event, NULL); gst_buffer_replace (&mux->out_buffer, NULL); GST_OBJECT_LOCK (mux); for (l = GST_ELEMENT (mux)->sinkpads; l; l = l->next) { gst_base_ts_mux_pad_reset (GST_BASE_TS_MUX_PAD (l->data)); } GST_OBJECT_UNLOCK (mux); if (alloc) { g_assert (klass->create_ts_mux); mux->tsmux = klass->create_ts_mux (mux); /* Preserve user-specified sections across resets */ if (si_sections) g_hash_table_foreach_steal (si_sections, (GHRFunc) steal_si_section, mux->tsmux); } if (si_sections) g_hash_table_unref (si_sections); if (klass->reset) klass->reset (mux); } static void release_buffer_cb (guint8 * data, void *user_data) { stream_data_free ((StreamData *) user_data); } static GstFlowReturn gst_base_ts_mux_create_stream (GstBaseTsMux * mux, GstBaseTsMuxPad * ts_pad) { GstFlowReturn ret = GST_FLOW_ERROR; GstCaps *caps; GstStructure *s; GstPad *pad; guint st = TSMUX_ST_RESERVED; const gchar *mt; const GValue *value = NULL; GstBuffer *codec_data = NULL; guint8 opus_channel_config_code = 0; guint16 profile = GST_JPEG2000_PARSE_PROFILE_NONE; guint8 main_level = 0; guint32 max_rate = 0; guint8 color_spec = 0; j2k_private_data *private_data = NULL; const gchar *stream_format = NULL; pad = GST_PAD (ts_pad); caps = gst_pad_get_current_caps (pad); if (caps == NULL) goto not_negotiated; GST_DEBUG_OBJECT (pad, "Creating stream with PID 0x%04x for caps %" GST_PTR_FORMAT, ts_pad->pid, caps); s = gst_caps_get_structure (caps, 0); mt = gst_structure_get_name (s); value = gst_structure_get_value (s, "codec_data"); if (value != NULL) codec_data = gst_value_get_buffer (value); stream_format = gst_structure_get_string (s, "stream-format"); if (strcmp (mt, "video/x-dirac") == 0) { st = TSMUX_ST_VIDEO_DIRAC; } else if (strcmp (mt, "audio/x-ac3") == 0) { st = TSMUX_ST_PS_AUDIO_AC3; } else if (strcmp (mt, "audio/x-dts") == 0) { st = TSMUX_ST_PS_AUDIO_DTS; } else if (strcmp (mt, "audio/x-lpcm") == 0) { st = TSMUX_ST_PS_AUDIO_LPCM; } else if (strcmp (mt, "video/x-h264") == 0) { st = TSMUX_ST_VIDEO_H264; } else if (strcmp (mt, "video/x-h265") == 0) { st = TSMUX_ST_VIDEO_HEVC; } else if (strcmp (mt, "audio/mpeg") == 0) { gint mpegversion; if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) { GST_ERROR_OBJECT (pad, "caps missing mpegversion"); goto not_negotiated; } switch (mpegversion) { case 1:{ int mpegaudioversion = 1; /* Assume mpegaudioversion=1 for backwards compatibility */ (void) gst_structure_get_int (s, "mpegaudioversion", &mpegaudioversion); if (mpegaudioversion == 1) st = TSMUX_ST_AUDIO_MPEG1; else st = TSMUX_ST_AUDIO_MPEG2; break; } case 2:{ /* mpegversion=2 in GStreamer refers to MPEG-2 Part 7 audio, */ st = TSMUX_ST_AUDIO_AAC; /* Check the stream format. If raw, make dummy internal codec data from the caps */ if (g_strcmp0 (stream_format, "raw") == 0) { ts_pad->codec_data = gst_base_ts_mux_aac_mpeg2_make_codec_data (mux, caps); ts_pad->prepare_func = gst_base_ts_mux_prepare_aac_mpeg2; if (ts_pad->codec_data == NULL) { GST_ERROR_OBJECT (mux, "Invalid or incomplete caps for MPEG-2 AAC"); goto not_negotiated; } } break; } case 4: { st = TSMUX_ST_AUDIO_AAC; /* Check the stream format. We need codec_data with RAW streams and mpegversion=4 */ if (g_strcmp0 (stream_format, "raw") == 0) { if (codec_data) { GST_DEBUG_OBJECT (pad, "we have additional codec data (%" G_GSIZE_FORMAT " bytes)", gst_buffer_get_size (codec_data)); ts_pad->codec_data = gst_buffer_ref (codec_data); ts_pad->prepare_func = gst_base_ts_mux_prepare_aac_mpeg4; } else { ts_pad->codec_data = NULL; GST_ERROR_OBJECT (mux, "Need codec_data for raw MPEG-4 AAC"); goto not_negotiated; } } break; } default: GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion); goto not_negotiated; } } else if (strcmp (mt, "video/mpeg") == 0) { gint mpegversion; if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) { GST_ERROR_OBJECT (pad, "caps missing mpegversion"); goto not_negotiated; } switch (mpegversion) { case 1: st = TSMUX_ST_VIDEO_MPEG1; break; case 2: st = TSMUX_ST_VIDEO_MPEG2; break; case 4: st = TSMUX_ST_VIDEO_MPEG4; break; default: GST_WARNING_OBJECT (pad, "unsupported mpegversion %d", mpegversion); goto not_negotiated; } } else if (strcmp (mt, "subpicture/x-dvb") == 0) { st = TSMUX_ST_PS_DVB_SUBPICTURE; } else if (strcmp (mt, "application/x-teletext") == 0) { st = TSMUX_ST_PS_TELETEXT; /* needs a particularly sized layout */ ts_pad->prepare_func = gst_base_ts_mux_prepare_teletext; } else if (strcmp (mt, "audio/x-opus") == 0) { guint8 channels, mapping_family, stream_count, coupled_count; guint8 channel_mapping[256]; if (!gst_codec_utils_opus_parse_caps (caps, NULL, &channels, &mapping_family, &stream_count, &coupled_count, channel_mapping)) { GST_ERROR_OBJECT (pad, "Incomplete Opus caps"); goto not_negotiated; } if (channels <= 2 && mapping_family == 0) { opus_channel_config_code = channels; } else if (channels == 2 && mapping_family == 255 && stream_count == 1 && coupled_count == 1) { /* Dual mono */ opus_channel_config_code = 0; } else if (channels >= 2 && channels <= 8 && mapping_family == 1) { static const guint8 coupled_stream_counts[9] = { 1, 0, 1, 1, 2, 2, 2, 3, 3 }; static const guint8 channel_map_a[8][8] = { {0}, {0, 1}, {0, 2, 1}, {0, 1, 2, 3}, {0, 4, 1, 2, 3}, {0, 4, 1, 2, 3, 5}, {0, 4, 1, 2, 3, 5, 6}, {0, 6, 1, 2, 3, 4, 5, 7}, }; static const guint8 channel_map_b[8][8] = { {0}, {0, 1}, {0, 1, 2}, {0, 1, 2, 3}, {0, 1, 2, 3, 4}, {0, 1, 2, 3, 4, 5}, {0, 1, 2, 3, 4, 5, 6}, {0, 1, 2, 3, 4, 5, 6, 7}, }; /* Vorbis mapping */ if (stream_count == channels - coupled_stream_counts[channels] && coupled_count == coupled_stream_counts[channels] && memcmp (channel_mapping, channel_map_a[channels - 1], channels) == 0) { opus_channel_config_code = channels; } else if (stream_count == channels - coupled_stream_counts[channels] && coupled_count == coupled_stream_counts[channels] && memcmp (channel_mapping, channel_map_b[channels - 1], channels) == 0) { opus_channel_config_code = channels | 0x80; } else { GST_FIXME_OBJECT (pad, "Opus channel mapping not handled"); goto not_negotiated; } } st = TSMUX_ST_PS_OPUS; ts_pad->prepare_func = gst_base_ts_mux_prepare_opus; } else if (strcmp (mt, "meta/x-klv") == 0) { st = TSMUX_ST_PS_KLV; } else if (strcmp (mt, "image/x-jpc") == 0) { /* * See this document for more details on standard: * * https://www.itu.int/rec/T-REC-H.222.0-201206-S/en * Annex S describes J2K details * Page 104 of this document describes J2k video descriptor */ const GValue *vProfile = gst_structure_get_value (s, "profile"); const GValue *vMainlevel = gst_structure_get_value (s, "main-level"); const GValue *vFramerate = gst_structure_get_value (s, "framerate"); const GValue *vColorimetry = gst_structure_get_value (s, "colorimetry"); private_data = g_new0 (j2k_private_data, 1); /* for now, we relax the condition that profile must exist and equal * GST_JPEG2000_PARSE_PROFILE_BC_SINGLE */ if (vProfile) { profile = g_value_get_int (vProfile); if (profile != GST_JPEG2000_PARSE_PROFILE_BC_SINGLE) { GST_LOG_OBJECT (pad, "Invalid JPEG 2000 profile %d", profile); /*goto not_negotiated; */ } } /* for now, we will relax the condition that the main level must be present */ if (vMainlevel) { main_level = g_value_get_uint (vMainlevel); if (main_level > 11) { GST_ERROR_OBJECT (pad, "Invalid main level %d", main_level); goto not_negotiated; } if (main_level >= 6) { max_rate = 2 ^ (main_level - 6) * 1600 * 1000000; } else { switch (main_level) { case 0: case 1: case 2: case 3: max_rate = 200 * 1000000; break; case 4: max_rate = 400 * 1000000; break; case 5: max_rate = 800 * 1000000; break; default: break; } } } else { /*GST_ERROR_OBJECT (pad, "Missing main level"); goto not_negotiated; */ } /* We always mux video in J2K-over-MPEG-TS non-interlaced mode */ private_data->interlace = FALSE; private_data->den = 0; private_data->num = 0; private_data->max_bitrate = max_rate; private_data->color_spec = 1; /* these two fields are not used, since we always mux as non-interlaced */ private_data->Fic = 1; private_data->Fio = 0; /* Get Framerate */ if (vFramerate != NULL) { /* Data for ELSM header */ private_data->num = gst_value_get_fraction_numerator (vFramerate); private_data->den = gst_value_get_fraction_denominator (vFramerate); } /* Get Colorimetry */ if (vColorimetry) { const char *colorimetry = g_value_get_string (vColorimetry); color_spec = GST_MPEGTS_JPEG2000_COLORSPEC_SRGB; /* RGB as default */ if (g_str_equal (colorimetry, GST_VIDEO_COLORIMETRY_BT601)) { color_spec = GST_MPEGTS_JPEG2000_COLORSPEC_REC601; } else { if (g_str_equal (colorimetry, GST_VIDEO_COLORIMETRY_BT709) || g_str_equal (colorimetry, GST_VIDEO_COLORIMETRY_SMPTE240M)) { color_spec = GST_MPEGTS_JPEG2000_COLORSPEC_REC709; } } private_data->color_spec = color_spec; } else { GST_ERROR_OBJECT (pad, "Colorimetry not present in caps"); goto not_negotiated; } st = TSMUX_ST_VIDEO_JP2K; ts_pad->prepare_func = gst_base_ts_mux_prepare_jpeg2000; ts_pad->prepare_data = private_data; ts_pad->free_func = gst_base_ts_mux_free_jpeg2000; } else { GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux); if (klass->handle_media_type) { st = klass->handle_media_type (mux, mt, ts_pad); } } if (st != TSMUX_ST_RESERVED) { ts_pad->stream = tsmux_create_stream (mux->tsmux, st, ts_pad->pid, ts_pad->language); } else { GST_DEBUG_OBJECT (pad, "Failed to determine stream type"); } if (ts_pad->stream != NULL) { const char *interlace_mode = gst_structure_get_string (s, "interlace-mode"); gst_structure_get_int (s, "rate", &ts_pad->stream->audio_sampling); gst_structure_get_int (s, "channels", &ts_pad->stream->audio_channels); gst_structure_get_int (s, "bitrate", &ts_pad->stream->audio_bitrate); /* frame rate */ gst_structure_get_fraction (s, "framerate", &ts_pad->stream->num, &ts_pad->stream->den); /* Interlace mode */ ts_pad->stream->interlace_mode = FALSE; if (interlace_mode) { ts_pad->stream->interlace_mode = g_str_equal (interlace_mode, "interleaved"); } /* Width and Height */ gst_structure_get_int (s, "width", &ts_pad->stream->horizontal_size); gst_structure_get_int (s, "height", &ts_pad->stream->vertical_size); ts_pad->stream->color_spec = color_spec; ts_pad->stream->max_bitrate = max_rate; ts_pad->stream->profile_and_level = profile | main_level; ts_pad->stream->opus_channel_config_code = opus_channel_config_code; tsmux_stream_set_buffer_release_func (ts_pad->stream, release_buffer_cb); tsmux_program_add_stream (ts_pad->prog, ts_pad->stream); ret = GST_FLOW_OK; } gst_caps_unref (caps); return ret; /* ERRORS */ not_negotiated: { g_free (private_data); GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing"); if (caps) gst_caps_unref (caps); return GST_FLOW_NOT_NEGOTIATED; } } static GstFlowReturn gst_base_ts_mux_create_pad_stream (GstBaseTsMux * mux, GstPad * pad) { GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (pad); gchar *name = NULL; gchar *pcr_name; GstFlowReturn ret = GST_FLOW_OK; if (ts_pad->prog_id == -1) { name = GST_PAD_NAME (pad); if (mux->prog_map != NULL && gst_structure_has_field (mux->prog_map, name)) { gint idx; gboolean ret = gst_structure_get_int (mux->prog_map, name, &idx); if (!ret) { GST_ELEMENT_ERROR (mux, STREAM, MUX, ("Reading program map failed. Assuming default"), (NULL)); idx = DEFAULT_PROG_ID; } if (idx < 0) { GST_DEBUG_OBJECT (mux, "Program number %d associate with pad %s less " "than zero; DEFAULT_PROGRAM = %d is used instead", idx, name, DEFAULT_PROG_ID); idx = DEFAULT_PROG_ID; } ts_pad->prog_id = idx; } else { ts_pad->prog_id = DEFAULT_PROG_ID; } } ts_pad->prog = (TsMuxProgram *) g_hash_table_lookup (mux->programs, GINT_TO_POINTER (ts_pad->prog_id)); if (ts_pad->prog == NULL) { ts_pad->prog = tsmux_program_new (mux->tsmux, ts_pad->prog_id); if (ts_pad->prog == NULL) goto no_program; tsmux_set_pmt_interval (ts_pad->prog, mux->pmt_interval); tsmux_program_set_scte35_pid (ts_pad->prog, mux->scte35_pid); tsmux_program_set_scte35_interval (ts_pad->prog, mux->scte35_null_interval); g_hash_table_insert (mux->programs, GINT_TO_POINTER (ts_pad->prog_id), ts_pad->prog); } if (ts_pad->stream == NULL) { ret = gst_base_ts_mux_create_stream (mux, ts_pad); if (ret != GST_FLOW_OK) goto no_stream; } if (ts_pad->prog->pcr_stream == NULL) { /* Take the first stream of the program for the PCR */ GST_DEBUG_OBJECT (ts_pad, "Use stream (pid=%d) from pad as PCR for program (prog_id = %d)", ts_pad->pid, ts_pad->prog_id); tsmux_program_set_pcr_stream (ts_pad->prog, ts_pad->stream); } /* Check for user-specified PCR PID */ pcr_name = g_strdup_printf ("PCR_%d", ts_pad->prog->pgm_number); if (mux->prog_map && gst_structure_has_field (mux->prog_map, pcr_name)) { const gchar *sink_name = gst_structure_get_string (mux->prog_map, pcr_name); if (!g_strcmp0 (name, sink_name)) { GST_DEBUG_OBJECT (mux, "User specified stream (pid=%d) as PCR for " "program (prog_id = %d)", ts_pad->pid, ts_pad->prog->pgm_number); tsmux_program_set_pcr_stream (ts_pad->prog, ts_pad->stream); } } g_free (pcr_name); return ret; /* ERRORS */ no_program: { GST_ELEMENT_ERROR (mux, STREAM, MUX, ("Could not create new program"), (NULL)); return GST_FLOW_ERROR; } no_stream: { GST_ELEMENT_ERROR (mux, STREAM, MUX, ("Could not create handler for stream"), (NULL)); return ret; } } static gboolean gst_base_ts_mux_create_pad_stream_func (GstElement * element, GstPad * pad, gpointer user_data) { GstFlowReturn *ret = user_data; *ret = gst_base_ts_mux_create_pad_stream (GST_BASE_TS_MUX (element), pad); return *ret == GST_FLOW_OK; } static GstFlowReturn gst_base_ts_mux_create_streams (GstBaseTsMux * mux) { GstFlowReturn ret = GST_FLOW_OK; gst_element_foreach_sink_pad (GST_ELEMENT_CAST (mux), gst_base_ts_mux_create_pad_stream_func, &ret); return ret; } static void new_packet_common_init (GstBaseTsMux * mux, GstBuffer * buf, guint8 * data, guint len) { /* Packets should be at least 188 bytes, but check anyway */ g_assert (len >= 2 || !data); if (!mux->streamheader_sent && data) { guint pid = ((data[1] & 0x1f) << 8) | data[2]; /* if it's a PAT or a PMT */ if (pid == 0x00 || (pid >= TSMUX_START_PMT_PID && pid < TSMUX_START_ES_PID)) { GstBuffer *hbuf; if (!buf) { hbuf = gst_buffer_new_and_alloc (len); gst_buffer_fill (hbuf, 0, data, len); } else { hbuf = gst_buffer_copy (buf); } GST_LOG_OBJECT (mux, "Collecting packet with pid 0x%04x into streamheaders", pid); g_queue_push_tail (&mux->streamheader, hbuf); } else if (!g_queue_is_empty (&mux->streamheader)) { gst_base_ts_mux_set_header_on_caps (mux); mux->streamheader_sent = TRUE; } } if (buf) { if (mux->is_header) { GST_LOG_OBJECT (mux, "marking as header buffer"); GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_HEADER); } if (mux->is_delta) { GST_LOG_OBJECT (mux, "marking as delta unit"); GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT); } else { GST_DEBUG_OBJECT (mux, "marking as non-delta unit"); mux->is_delta = TRUE; } } } static GstFlowReturn gst_base_ts_mux_push_packets (GstBaseTsMux * mux, gboolean force) { GstBufferList *buffer_list; gint align = mux->alignment; gint av, packet_size; packet_size = mux->packet_size; if (align < 0) align = mux->automatic_alignment; av = gst_adapter_available (mux->out_adapter); GST_LOG_OBJECT (mux, "align %d, av %d", align, av); if (av == 0) return GST_FLOW_OK; /* no alignment, just push all available data */ if (align == 0) { buffer_list = gst_adapter_take_buffer_list (mux->out_adapter, av); return gst_aggregator_finish_buffer_list (GST_AGGREGATOR (mux), buffer_list); } align *= packet_size; if (!force && align > av) return GST_FLOW_OK; buffer_list = gst_buffer_list_new_sized ((av / align) + 1); GST_LOG_OBJECT (mux, "aligning to %d bytes", align); while (align <= av) { GstBuffer *buf; GstClockTime pts; pts = gst_adapter_prev_pts (mux->out_adapter, NULL); buf = gst_adapter_take_buffer (mux->out_adapter, align); GST_BUFFER_PTS (buf) = pts; gst_buffer_list_add (buffer_list, buf); av -= align; } if (av > 0 && force) { GstBuffer *buf; GstClockTime pts; guint8 *data; guint32 header; gint dummy; GstMapInfo map; GST_LOG_OBJECT (mux, "handling %d leftover bytes", av); pts = gst_adapter_prev_pts (mux->out_adapter, NULL); buf = gst_buffer_new_and_alloc (align); GST_BUFFER_PTS (buf) = pts; gst_buffer_map (buf, &map, GST_MAP_READ); data = map.data; gst_adapter_copy (mux->out_adapter, data, 0, av); gst_adapter_clear (mux->out_adapter); data += av; header = GST_READ_UINT32_BE (data - packet_size); dummy = (map.size - av) / packet_size; GST_LOG_OBJECT (mux, "adding %d null packets", dummy); for (; dummy > 0; dummy--) { gint offset; if (packet_size > GST_BASE_TS_MUX_NORMAL_PACKET_LENGTH) { GST_WRITE_UINT32_BE (data, header); /* simply increase header a bit and never mind too much */ header++; offset = 4; } else { offset = 0; } GST_WRITE_UINT8 (data + offset, TSMUX_SYNC_BYTE); /* null packet PID */ GST_WRITE_UINT16_BE (data + offset + 1, 0x1FFF); /* no adaptation field exists | continuity counter undefined */ GST_WRITE_UINT8 (data + offset + 3, 0x10); /* payload */ memset (data + offset + 4, 0, GST_BASE_TS_MUX_NORMAL_PACKET_LENGTH - 4); data += packet_size; } gst_buffer_unmap (buf, &map); gst_buffer_list_add (buffer_list, buf); } return gst_aggregator_finish_buffer_list (GST_AGGREGATOR (mux), buffer_list); } static GstFlowReturn gst_base_ts_mux_collect_packet (GstBaseTsMux * mux, GstBuffer * buf) { GST_LOG_OBJECT (mux, "collecting packet size %" G_GSIZE_FORMAT, gst_buffer_get_size (buf)); gst_adapter_push (mux->out_adapter, buf); return GST_FLOW_OK; } static GstEvent * check_pending_key_unit_event (GstEvent * pending_event, GstSegment * segment, GstClockTime timestamp, guint flags, GstClockTime pending_key_unit_ts) { GstClockTime running_time, stream_time; gboolean all_headers; guint count; GstEvent *event = NULL; g_assert (segment != NULL); if (pending_event == NULL) goto out; if (GST_CLOCK_TIME_IS_VALID (pending_key_unit_ts) && timestamp == GST_CLOCK_TIME_NONE) goto out; running_time = timestamp; GST_INFO ("now %" GST_TIME_FORMAT " wanted %" GST_TIME_FORMAT, GST_TIME_ARGS (running_time), GST_TIME_ARGS (pending_key_unit_ts)); if (GST_CLOCK_TIME_IS_VALID (pending_key_unit_ts) && running_time < pending_key_unit_ts) goto out; if (flags & GST_BUFFER_FLAG_DELTA_UNIT) { GST_INFO ("pending force key unit, waiting for keyframe"); goto out; } stream_time = gst_segment_to_stream_time (segment, GST_FORMAT_TIME, timestamp); if (GST_EVENT_TYPE (pending_event) == GST_EVENT_CUSTOM_DOWNSTREAM) { gst_video_event_parse_downstream_force_key_unit (pending_event, NULL, NULL, NULL, &all_headers, &count); } else { gst_video_event_parse_upstream_force_key_unit (pending_event, NULL, &all_headers, &count); } event = gst_video_event_new_downstream_force_key_unit (timestamp, stream_time, running_time, all_headers, count); gst_event_set_seqnum (event, gst_event_get_seqnum (pending_event)); out: return event; } /* Called when the TsMux has prepared a packet for output. Return FALSE * on error */ static gboolean new_packet_cb (GstBuffer * buf, void *user_data, gint64 new_pcr) { GstBaseTsMux *mux = (GstBaseTsMux *) user_data; GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux); GstMapInfo map; g_assert (klass->output_packet); gst_buffer_map (buf, &map, GST_MAP_READWRITE); if (!GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) GST_BUFFER_PTS (buf) = mux->last_ts; /* do common init (flags and streamheaders) */ new_packet_common_init (mux, buf, map.data, map.size); gst_buffer_unmap (buf, &map); return klass->output_packet (mux, buf, new_pcr); } /* called when TsMux needs new packet to write into */ static void alloc_packet_cb (GstBuffer ** buf, void *user_data) { GstBaseTsMux *mux = (GstBaseTsMux *) user_data; GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux); g_assert (klass->allocate_packet); klass->allocate_packet (mux, buf); } static GstFlowReturn gst_base_ts_mux_aggregate_buffer (GstBaseTsMux * mux, GstAggregatorPad * agg_pad, GstBuffer * buf) { GstFlowReturn ret = GST_FLOW_OK; GstBaseTsMuxPad *best = GST_BASE_TS_MUX_PAD (agg_pad); TsMuxProgram *prog; gint64 pts = GST_CLOCK_STIME_NONE; gint64 dts = GST_CLOCK_STIME_NONE; gboolean delta = TRUE, header = FALSE; StreamData *stream_data; GstMpegtsSection *scte_section = NULL; GST_DEBUG_OBJECT (mux, "Pads collected"); if (buf && gst_buffer_get_size (buf) == 0 && GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_GAP)) { gst_buffer_unref (buf); return GST_FLOW_OK; } if (G_UNLIKELY (mux->first)) { ret = gst_base_ts_mux_create_streams (mux); if (G_UNLIKELY (ret != GST_FLOW_OK)) { if (buf) gst_buffer_unref (buf); return ret; } mux->first = FALSE; } prog = best->prog; if (prog == NULL) { GList *cur; gst_base_ts_mux_create_pad_stream (mux, GST_PAD (best)); tsmux_resend_pat (mux->tsmux); tsmux_resend_si (mux->tsmux); prog = best->prog; g_assert_nonnull (prog); /* output PMT for each program */ for (cur = mux->tsmux->programs; cur; cur = cur->next) { TsMuxProgram *program = (TsMuxProgram *) cur->data; tsmux_resend_pmt (program); } } g_assert (buf != NULL); if (best->prepare_func) { GstBuffer *tmp; tmp = best->prepare_func (buf, best, mux); g_assert (tmp); gst_buffer_unref (buf); buf = tmp; } if (mux->force_key_unit_event != NULL && best->stream->is_video_stream) { GstEvent *event; event = check_pending_key_unit_event (mux->force_key_unit_event, &agg_pad->segment, GST_BUFFER_PTS (buf), GST_BUFFER_FLAGS (buf), mux->pending_key_unit_ts); if (event) { GstClockTime running_time; guint count; GList *cur; mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE; gst_event_replace (&mux->force_key_unit_event, NULL); gst_video_event_parse_downstream_force_key_unit (event, NULL, NULL, &running_time, NULL, &count); GST_INFO_OBJECT (mux, "pushing downstream force-key-unit event %d " "%" GST_TIME_FORMAT " count %d", gst_event_get_seqnum (event), GST_TIME_ARGS (running_time), count); gst_pad_push_event (GST_AGGREGATOR_SRC_PAD (mux), event); /* output PAT, SI tables */ tsmux_resend_pat (mux->tsmux); tsmux_resend_si (mux->tsmux); /* output PMT for each program */ for (cur = mux->tsmux->programs; cur; cur = cur->next) { TsMuxProgram *program = (TsMuxProgram *) cur->data; tsmux_resend_pmt (program); } } } if (G_UNLIKELY (prog->pcr_stream == NULL)) { /* Take the first data stream for the PCR */ GST_DEBUG_OBJECT (best, "Use stream (pid=%d) from pad as PCR for program (prog_id = %d)", best->pid, best->prog_id); /* Set the chosen PCR stream */ tsmux_program_set_pcr_stream (prog, best->stream); } GST_DEBUG_OBJECT (best, "Chose stream for output (PID: 0x%04x)", best->pid); GST_OBJECT_LOCK (mux); scte_section = mux->pending_scte35_section; mux->pending_scte35_section = NULL; GST_OBJECT_UNLOCK (mux); if (G_UNLIKELY (scte_section)) { GST_DEBUG_OBJECT (mux, "Sending pending SCTE section"); if (!tsmux_send_section (mux->tsmux, scte_section)) GST_ERROR_OBJECT (mux, "Error sending SCTE section !"); } if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) { pts = GSTTIME_TO_MPEGTIME (GST_BUFFER_PTS (buf)); GST_DEBUG_OBJECT (mux, "Buffer has PTS %" GST_TIME_FORMAT " pts %" G_GINT64_FORMAT, GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts); } if (GST_CLOCK_STIME_IS_VALID (best->dts)) { dts = GSTTIME_TO_MPEGTIME (best->dts); GST_DEBUG_OBJECT (mux, "Buffer has DTS %" GST_STIME_FORMAT " dts %" G_GINT64_FORMAT, GST_STIME_ARGS (best->dts), dts); } /* should not have a DTS without PTS */ if (!GST_CLOCK_STIME_IS_VALID (pts) && GST_CLOCK_STIME_IS_VALID (dts)) { GST_DEBUG_OBJECT (mux, "using DTS for unknown PTS"); pts = dts; } if (best->stream->is_video_stream) { delta = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT); header = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_HEADER); } if (best->stream->is_meta && gst_buffer_get_size (buf) > (G_MAXUINT16 - 3)) { GST_WARNING_OBJECT (mux, "KLV meta unit too big, splitting not supported"); gst_buffer_unref (buf); return GST_FLOW_OK; } GST_DEBUG_OBJECT (mux, "delta: %d", delta); stream_data = stream_data_new (buf); tsmux_stream_add_data (best->stream, stream_data->map_info.data, stream_data->map_info.size, stream_data, pts, dts, !delta); /* outgoing ts follows ts of PCR program stream */ if (prog->pcr_stream == best->stream) { /* prefer DTS if present for PCR as it should be monotone */ mux->last_ts = GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (buf)) ? GST_BUFFER_DTS (buf) : GST_BUFFER_PTS (buf); } mux->is_delta = delta; mux->is_header = header; while (tsmux_stream_bytes_in_buffer (best->stream) > 0) { if (!tsmux_write_stream_packet (mux->tsmux, best->stream)) { /* Failed writing data for some reason. Set appropriate error */ GST_DEBUG_OBJECT (mux, "Failed to write data packet"); GST_ELEMENT_ERROR (mux, STREAM, MUX, ("Failed writing output data to stream %04x", best->stream->id), (NULL)); goto write_fail; } } /* flush packet cache */ return gst_base_ts_mux_push_packets (mux, FALSE); /* ERRORS */ write_fail: { return mux->last_flow_ret; } } /* GstElement implementation */ static gboolean gst_base_ts_mux_has_pad_with_pid (GstBaseTsMux * mux, guint16 pid) { GList *l; gboolean res = FALSE; GST_OBJECT_LOCK (mux); for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) { GstBaseTsMuxPad *tpad = GST_BASE_TS_MUX_PAD (l->data); if (tpad->pid == pid) { res = TRUE; break; } } GST_OBJECT_UNLOCK (mux); return res; } static GstPad * gst_base_ts_mux_request_new_pad (GstElement * element, GstPadTemplate * templ, const gchar * name, const GstCaps * caps) { GstBaseTsMux *mux = GST_BASE_TS_MUX (element); gint pid = -1; GstPad *pad = NULL; if (name != NULL && sscanf (name, "sink_%d", &pid) == 1) { if (tsmux_find_stream (mux->tsmux, pid)) goto stream_exists; /* Make sure we don't use reserved PID. * FIXME : This should be extended to other variants (ex: ATSC) reserved PID */ if (pid < TSMUX_START_ES_PID) goto invalid_stream_pid; } else { do { pid = tsmux_get_new_pid (mux->tsmux); } while (gst_base_ts_mux_has_pad_with_pid (mux, pid)); } pad = (GstPad *) GST_ELEMENT_CLASS (parent_class)->request_new_pad (element, templ, name, caps); gst_base_ts_mux_pad_reset (GST_BASE_TS_MUX_PAD (pad)); GST_BASE_TS_MUX_PAD (pad)->pid = pid; return pad; /* ERRORS */ stream_exists: { GST_ELEMENT_ERROR (element, STREAM, MUX, ("Duplicate PID requested"), (NULL)); return NULL; } invalid_stream_pid: { GST_ELEMENT_ERROR (element, STREAM, MUX, ("Invalid Elementary stream PID (< 0x40)"), (NULL)); return NULL; } } static void gst_base_ts_mux_release_pad (GstElement * element, GstPad * pad) { GstBaseTsMux *mux = GST_BASE_TS_MUX (element); if (mux->tsmux) { GList *cur; GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (pad); gint pid = ts_pad->pid; if (ts_pad->prog) { if (ts_pad->prog->pcr_stream == ts_pad->stream) { tsmux_program_set_pcr_stream (ts_pad->prog, NULL); } if (tsmux_remove_stream (mux->tsmux, pid, ts_pad->prog)) { g_hash_table_remove (mux->programs, GINT_TO_POINTER (ts_pad->prog_id)); } } tsmux_resend_pat (mux->tsmux); tsmux_resend_si (mux->tsmux); /* output PMT for each program */ for (cur = mux->tsmux->programs; cur; cur = cur->next) { TsMuxProgram *program = (TsMuxProgram *) cur->data; tsmux_resend_pmt (program); } } GST_ELEMENT_CLASS (parent_class)->release_pad (element, pad); } static gboolean gst_base_ts_mux_send_event (GstElement * element, GstEvent * event) { GstMpegtsSection *section; GstBaseTsMux *mux = GST_BASE_TS_MUX (element); section = gst_event_parse_mpegts_section (event); if (section) { GST_DEBUG ("Received event with mpegts section"); if (section->section_type == GST_MPEGTS_SECTION_SCTE_SIT) { /* Will be sent from the streaming threads */ GST_DEBUG_OBJECT (mux, "Storing SCTE event"); GST_OBJECT_LOCK (element); if (mux->pending_scte35_section) gst_mpegts_section_unref (mux->pending_scte35_section); mux->pending_scte35_section = section; GST_OBJECT_UNLOCK (element); } else { /* TODO: Check that the section type is supported */ tsmux_add_mpegts_si_section (mux->tsmux, section); } gst_event_unref (event); return TRUE; } return GST_ELEMENT_CLASS (parent_class)->send_event (element, event); } /* GstAggregator implementation */ static gboolean gst_base_ts_mux_sink_event (GstAggregator * agg, GstAggregatorPad * agg_pad, GstEvent * event) { GstAggregatorClass *agg_class = GST_AGGREGATOR_CLASS (parent_class); GstBaseTsMux *mux = GST_BASE_TS_MUX (agg); GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (agg_pad); gboolean res = FALSE; gboolean forward = TRUE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_CUSTOM_DOWNSTREAM: { GstClockTime timestamp, stream_time, running_time; gboolean all_headers; guint count; if (!gst_video_event_is_force_key_unit (event)) goto out; res = TRUE; forward = FALSE; gst_video_event_parse_downstream_force_key_unit (event, ×tamp, &stream_time, &running_time, &all_headers, &count); GST_INFO_OBJECT (ts_pad, "have downstream force-key-unit event, " "seqnum %d, running-time %" GST_TIME_FORMAT " count %d", gst_event_get_seqnum (event), GST_TIME_ARGS (running_time), count); if (mux->force_key_unit_event != NULL) { GST_INFO_OBJECT (mux, "skipping downstream force key unit event " "as an upstream force key unit is already queued"); goto out; } if (!all_headers) goto out; mux->pending_key_unit_ts = running_time; gst_event_replace (&mux->force_key_unit_event, event); break; } case GST_EVENT_TAG:{ GstTagList *list; gchar *lang = NULL; GST_DEBUG_OBJECT (mux, "received tag event"); gst_event_parse_tag (event, &list); /* Matroska wants ISO 639-2B code, taglist most likely contains 639-1 */ if (gst_tag_list_get_string (list, GST_TAG_LANGUAGE_CODE, &lang)) { const gchar *lang_code; lang_code = gst_tag_get_language_code_iso_639_2B (lang); if (lang_code) { GST_DEBUG_OBJECT (ts_pad, "Setting language to '%s'", lang_code); g_free (ts_pad->language); ts_pad->language = g_strdup (lang_code); } else { GST_WARNING_OBJECT (ts_pad, "Did not get language code for '%s'", lang); } g_free (lang); } /* handled this, don't want collectpads to forward it downstream */ res = TRUE; forward = gst_tag_list_get_scope (list) == GST_TAG_SCOPE_GLOBAL; break; } case GST_EVENT_STREAM_START:{ GstStreamFlags flags; gst_event_parse_stream_flags (event, &flags); /* Don't wait for data on sparse inputs like metadata streams */ /* if ((flags & GST_STREAM_FLAG_SPARSE)) { GST_COLLECT_PADS_STATE_UNSET (data, GST_COLLECT_PADS_STATE_LOCKED); gst_collect_pads_set_waiting (pads, data, FALSE); GST_COLLECT_PADS_STATE_SET (data, GST_COLLECT_PADS_STATE_LOCKED); } */ break; } default: break; } out: if (!forward) gst_event_unref (event); else res = agg_class->sink_event (agg, agg_pad, event); return res; } static gboolean gst_base_ts_mux_src_event (GstAggregator * agg, GstEvent * event) { GstAggregatorClass *agg_class = GST_AGGREGATOR_CLASS (parent_class); GstBaseTsMux *mux = GST_BASE_TS_MUX (agg); gboolean res = TRUE, forward = TRUE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_CUSTOM_UPSTREAM: { GstIterator *iter; GValue sinkpad_value = G_VALUE_INIT; GstClockTime running_time; gboolean all_headers, done = FALSE, res = FALSE; guint count; if (!gst_video_event_is_force_key_unit (event)) break; forward = FALSE; gst_video_event_parse_upstream_force_key_unit (event, &running_time, &all_headers, &count); GST_INFO_OBJECT (mux, "received upstream force-key-unit event, " "seqnum %d running_time %" GST_TIME_FORMAT " all_headers %d count %d", gst_event_get_seqnum (event), GST_TIME_ARGS (running_time), all_headers, count); if (!all_headers) break; mux->pending_key_unit_ts = running_time; gst_event_replace (&mux->force_key_unit_event, event); iter = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mux)); while (!done) { switch (gst_iterator_next (iter, &sinkpad_value)) { case GST_ITERATOR_OK:{ GstPad *sinkpad = g_value_get_object (&sinkpad_value); gboolean tmp; GST_INFO_OBJECT (GST_AGGREGATOR_SRC_PAD (agg), "forwarding"); tmp = gst_pad_push_event (sinkpad, gst_event_ref (event)); GST_INFO_OBJECT (mux, "result %d", tmp); /* succeed if at least one pad succeeds */ res |= tmp; break; } case GST_ITERATOR_DONE: done = TRUE; break; case GST_ITERATOR_RESYNC: gst_iterator_resync (iter); break; case GST_ITERATOR_ERROR: g_assert_not_reached (); break; } g_value_reset (&sinkpad_value); } g_value_unset (&sinkpad_value); gst_iterator_free (iter); break; } default: break; } if (forward) res = agg_class->src_event (agg, event); else gst_event_unref (event); return res; } static GstBuffer * gst_base_ts_mux_clip (GstAggregator * agg, GstAggregatorPad * agg_pad, GstBuffer * buf) { GstBaseTsMuxPad *pad = GST_BASE_TS_MUX_PAD (agg_pad); GstClockTime time; GstBuffer *ret; ret = buf; /* PTS */ time = GST_BUFFER_PTS (buf); /* invalid left alone and passed */ if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) { time = gst_segment_to_running_time (&agg_pad->segment, GST_FORMAT_TIME, time); if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) { GST_DEBUG_OBJECT (pad, "clipping buffer on pad outside segment"); gst_buffer_unref (buf); ret = NULL; goto beach; } else { GST_LOG_OBJECT (pad, "buffer pts %" GST_TIME_FORMAT " -> %" GST_TIME_FORMAT " running time", GST_TIME_ARGS (GST_BUFFER_PTS (buf)), GST_TIME_ARGS (time)); buf = ret = gst_buffer_make_writable (buf); GST_BUFFER_PTS (ret) = time; } } /* DTS */ time = GST_BUFFER_DTS (buf); /* invalid left alone and passed */ if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) { gint sign; gint64 dts; sign = gst_segment_to_running_time_full (&agg_pad->segment, GST_FORMAT_TIME, time, &time); if (sign > 0) dts = (gint64) time; else dts = -((gint64) time); GST_LOG_OBJECT (pad, "buffer dts %" GST_TIME_FORMAT " -> %" GST_STIME_FORMAT " running time", GST_TIME_ARGS (GST_BUFFER_DTS (buf)), GST_STIME_ARGS (dts)); if (GST_CLOCK_STIME_IS_VALID (pad->dts) && dts < pad->dts) { /* Ignore DTS going backward */ GST_WARNING_OBJECT (pad, "ignoring DTS going backward"); dts = pad->dts; } ret = gst_buffer_make_writable (buf); if (sign > 0) GST_BUFFER_DTS (ret) = time; else GST_BUFFER_DTS (ret) = GST_CLOCK_TIME_NONE; pad->dts = dts; } else { pad->dts = GST_CLOCK_STIME_NONE; } beach: return ret; } static GstFlowReturn gst_base_ts_mux_update_src_caps (GstAggregator * agg, GstCaps * caps, GstCaps ** ret) { GstBaseTsMux *mux = GST_BASE_TS_MUX (agg); GstStructure *s; *ret = gst_caps_copy (caps); s = gst_caps_get_structure (*ret, 0); gst_structure_set (s, "packetsize", G_TYPE_INT, mux->packet_size, NULL); return GST_FLOW_OK; } static GstBaseTsMuxPad * gst_base_ts_mux_find_best_pad (GstAggregator * aggregator) { GstBaseTsMuxPad *best = NULL; GstClockTime best_ts = GST_CLOCK_TIME_NONE; GList *l; GST_OBJECT_LOCK (aggregator); for (l = GST_ELEMENT_CAST (aggregator)->sinkpads; l; l = l->next) { GstBaseTsMuxPad *tpad = GST_BASE_TS_MUX_PAD (l->data); GstAggregatorPad *apad = GST_AGGREGATOR_PAD_CAST (tpad); GstBuffer *buffer; buffer = gst_aggregator_pad_peek_buffer (apad); if (!buffer) continue; if (best_ts == GST_CLOCK_TIME_NONE) { best = tpad; best_ts = GST_BUFFER_DTS_OR_PTS (buffer); } else if (GST_BUFFER_DTS_OR_PTS (buffer) != GST_CLOCK_TIME_NONE) { GstClockTime t = GST_BUFFER_DTS_OR_PTS (buffer); if (t < best_ts) { best = tpad; best_ts = t; } } gst_buffer_unref (buffer); } if (best) gst_object_ref (best); GST_OBJECT_UNLOCK (aggregator); GST_DEBUG_OBJECT (aggregator, "Best pad found with %" GST_TIME_FORMAT ": %" GST_PTR_FORMAT, GST_TIME_ARGS (best_ts), best); return best; } static gboolean gst_base_ts_mux_are_all_pads_eos (GstBaseTsMux * mux) { GList *l; gboolean ret = TRUE; GST_OBJECT_LOCK (mux); for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) { GstBaseTsMuxPad *pad = GST_BASE_TS_MUX_PAD (l->data); if (!gst_aggregator_pad_is_eos (GST_AGGREGATOR_PAD (pad))) { ret = FALSE; break; } } GST_OBJECT_UNLOCK (mux); return ret; } static GstFlowReturn gst_base_ts_mux_aggregate (GstAggregator * agg, gboolean timeout) { GstBaseTsMux *mux = GST_BASE_TS_MUX (agg); GstFlowReturn ret = GST_FLOW_OK; GstBaseTsMuxPad *best = gst_base_ts_mux_find_best_pad (agg); if (best) { GstBuffer *buffer; buffer = gst_aggregator_pad_pop_buffer (GST_AGGREGATOR_PAD (best)); ret = gst_base_ts_mux_aggregate_buffer (GST_BASE_TS_MUX (agg), GST_AGGREGATOR_PAD (best), buffer); gst_object_unref (best); if (ret != GST_FLOW_OK) goto done; } if (gst_base_ts_mux_are_all_pads_eos (mux)) { GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux); /* drain some possibly cached data */ if (klass->drain) klass->drain (mux); gst_base_ts_mux_push_packets (mux, TRUE); ret = GST_FLOW_EOS; } done: return ret; } static gboolean gst_base_ts_mux_start (GstAggregator * agg) { gst_base_ts_mux_reset (GST_BASE_TS_MUX (agg), TRUE); return TRUE; } static gboolean gst_base_ts_mux_stop (GstAggregator * agg) { gst_base_ts_mux_reset (GST_BASE_TS_MUX (agg), TRUE); return TRUE; } /* GObject implementation */ static void gst_base_ts_mux_dispose (GObject * object) { GstBaseTsMux *mux = GST_BASE_TS_MUX (object); gst_base_ts_mux_reset (mux, FALSE); if (mux->out_adapter) { g_object_unref (mux->out_adapter); mux->out_adapter = NULL; } if (mux->prog_map) { gst_structure_free (mux->prog_map); mux->prog_map = NULL; } if (mux->programs) { g_hash_table_destroy (mux->programs); mux->programs = NULL; } GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object)); } static void gst_base_ts_mux_constructed (GObject * object) { GstBaseTsMux *mux = GST_BASE_TS_MUX (object); /* initial state */ gst_base_ts_mux_reset (mux, TRUE); } static void gst_base_ts_mux_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstBaseTsMux *mux = GST_BASE_TS_MUX (object); GList *l; switch (prop_id) { case PROP_PROG_MAP: { const GstStructure *s = gst_value_get_structure (value); if (mux->prog_map) { gst_structure_free (mux->prog_map); } if (s) mux->prog_map = gst_structure_copy (s); else mux->prog_map = NULL; break; } case PROP_PAT_INTERVAL: mux->pat_interval = g_value_get_uint (value); if (mux->tsmux) tsmux_set_pat_interval (mux->tsmux, mux->pat_interval); break; case PROP_PMT_INTERVAL: mux->pmt_interval = g_value_get_uint (value); GST_OBJECT_LOCK (mux); for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) { GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (l->data); tsmux_set_pmt_interval (ts_pad->prog, mux->pmt_interval); } GST_OBJECT_UNLOCK (mux); break; case PROP_ALIGNMENT: mux->alignment = g_value_get_int (value); break; case PROP_SI_INTERVAL: mux->si_interval = g_value_get_uint (value); tsmux_set_si_interval (mux->tsmux, mux->si_interval); break; case PROP_BITRATE: mux->bitrate = g_value_get_uint64 (value); if (mux->tsmux) tsmux_set_bitrate (mux->tsmux, mux->bitrate); break; case PROP_PCR_INTERVAL: mux->pcr_interval = g_value_get_uint (value); if (mux->tsmux) tsmux_set_pcr_interval (mux->tsmux, mux->pcr_interval); break; case PROP_SCTE_35_PID: mux->scte35_pid = g_value_get_uint (value); break; case PROP_SCTE_35_NULL_INTERVAL: mux->scte35_null_interval = g_value_get_uint (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_base_ts_mux_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstBaseTsMux *mux = GST_BASE_TS_MUX (object); switch (prop_id) { case PROP_PROG_MAP: gst_value_set_structure (value, mux->prog_map); break; case PROP_PAT_INTERVAL: g_value_set_uint (value, mux->pat_interval); break; case PROP_PMT_INTERVAL: g_value_set_uint (value, mux->pmt_interval); break; case PROP_ALIGNMENT: g_value_set_int (value, mux->alignment); break; case PROP_SI_INTERVAL: g_value_set_uint (value, mux->si_interval); break; case PROP_BITRATE: g_value_set_uint64 (value, mux->bitrate); break; case PROP_PCR_INTERVAL: g_value_set_uint (value, mux->pcr_interval); break; case PROP_SCTE_35_PID: g_value_set_uint (value, mux->scte35_pid); break; case PROP_SCTE_35_NULL_INTERVAL: g_value_set_uint (value, mux->scte35_null_interval); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* Default vmethods implementation */ static TsMux * gst_base_ts_mux_default_create_ts_mux (GstBaseTsMux * mux) { TsMux *tsmux = tsmux_new (); tsmux_set_write_func (tsmux, new_packet_cb, mux); tsmux_set_alloc_func (tsmux, alloc_packet_cb, mux); tsmux_set_pat_interval (tsmux, mux->pat_interval); tsmux_set_si_interval (tsmux, mux->si_interval); tsmux_set_bitrate (tsmux, mux->bitrate); tsmux_set_pcr_interval (tsmux, mux->pcr_interval); return tsmux; } static void gst_base_ts_mux_default_allocate_packet (GstBaseTsMux * mux, GstBuffer ** buffer) { GstBuffer *buf; buf = gst_buffer_new_and_alloc (mux->packet_size); *buffer = buf; } static gboolean gst_base_ts_mux_default_output_packet (GstBaseTsMux * mux, GstBuffer * buffer, gint64 new_pcr) { gst_base_ts_mux_collect_packet (mux, buffer); return TRUE; } /* Subclass API */ void gst_base_ts_mux_set_packet_size (GstBaseTsMux * mux, gsize size) { mux->packet_size = size; } void gst_base_ts_mux_set_automatic_alignment (GstBaseTsMux * mux, gsize alignment) { mux->automatic_alignment = alignment; } static void gst_base_ts_mux_class_init (GstBaseTsMuxClass * klass) { GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); GstAggregatorClass *gstagg_class = GST_AGGREGATOR_CLASS (klass); GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GST_DEBUG_CATEGORY_INIT (gst_base_ts_mux_debug, "basetsmux", 0, "MPEG Transport Stream muxer"); gst_element_class_set_static_metadata (gstelement_class, "MPEG Transport Stream Muxer", "Codec/Muxer", "Multiplexes media streams into an MPEG Transport Stream", "Fluendo "); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_base_ts_mux_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_base_ts_mux_get_property); gobject_class->dispose = gst_base_ts_mux_dispose; gobject_class->constructed = gst_base_ts_mux_constructed; gstelement_class->request_new_pad = gst_base_ts_mux_request_new_pad; gstelement_class->release_pad = gst_base_ts_mux_release_pad; gstelement_class->send_event = gst_base_ts_mux_send_event; gstagg_class->update_src_caps = gst_base_ts_mux_update_src_caps; gstagg_class->aggregate = gst_base_ts_mux_aggregate; gstagg_class->clip = gst_base_ts_mux_clip; gstagg_class->sink_event = gst_base_ts_mux_sink_event; gstagg_class->src_event = gst_base_ts_mux_src_event; gstagg_class->start = gst_base_ts_mux_start; gstagg_class->stop = gst_base_ts_mux_stop; klass->create_ts_mux = gst_base_ts_mux_default_create_ts_mux; klass->allocate_packet = gst_base_ts_mux_default_allocate_packet; klass->output_packet = gst_base_ts_mux_default_output_packet; g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PROG_MAP, g_param_spec_boxed ("prog-map", "Program map", "A GstStructure specifies the mapping from elementary streams to programs", GST_TYPE_STRUCTURE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PAT_INTERVAL, g_param_spec_uint ("pat-interval", "PAT interval", "Set the interval (in ticks of the 90kHz clock) for writing out the PAT table", 1, G_MAXUINT, TSMUX_DEFAULT_PAT_INTERVAL, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PMT_INTERVAL, g_param_spec_uint ("pmt-interval", "PMT interval", "Set the interval (in ticks of the 90kHz clock) for writing out the PMT table", 1, G_MAXUINT, TSMUX_DEFAULT_PMT_INTERVAL, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ALIGNMENT, g_param_spec_int ("alignment", "packet alignment", "Number of packets per buffer (padded with dummy packets on EOS) " "(-1 = auto, 0 = all available packets, 7 for UDP streaming)", -1, G_MAXINT, BASETSMUX_DEFAULT_ALIGNMENT, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SI_INTERVAL, g_param_spec_uint ("si-interval", "SI interval", "Set the interval (in ticks of the 90kHz clock) for writing out the Service" "Information tables", 1, G_MAXUINT, TSMUX_DEFAULT_SI_INTERVAL, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BITRATE, g_param_spec_uint64 ("bitrate", "Bitrate (in bits per second)", "Set the target bitrate, will insert null packets as padding " " to achieve multiplex-wide constant bitrate (0 means no padding)", 0, G_MAXUINT64, TSMUX_DEFAULT_BITRATE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PCR_INTERVAL, g_param_spec_uint ("pcr-interval", "PCR interval", "Set the interval (in ticks of the 90kHz clock) for writing PCR", 1, G_MAXUINT, TSMUX_DEFAULT_PCR_INTERVAL, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SCTE_35_PID, g_param_spec_uint ("scte-35-pid", "SCTE-35 PID", "PID to use for inserting SCTE-35 packets (0: unused)", 0, G_MAXUINT, DEFAULT_SCTE_35_PID, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SCTE_35_NULL_INTERVAL, g_param_spec_uint ("scte-35-null-interval", "SCTE-35 NULL packet interval", "Set the interval (in ticks of the 90kHz clock) for writing SCTE-35 NULL (heartbeat) packets." " (only valid if scte-35-pid is different from 0)", 1, G_MAXUINT, TSMUX_DEFAULT_SCTE_35_NULL_INTERVAL, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS))); gst_element_class_add_static_pad_template_with_gtype (gstelement_class, &gst_base_ts_mux_src_factory, GST_TYPE_AGGREGATOR_PAD); gst_type_mark_as_plugin_api (GST_TYPE_BASE_TS_MUX_PAD, 0); } static void gst_base_ts_mux_init (GstBaseTsMux * mux) { mux->out_adapter = gst_adapter_new (); /* properties */ mux->pat_interval = TSMUX_DEFAULT_PAT_INTERVAL; mux->pmt_interval = TSMUX_DEFAULT_PMT_INTERVAL; mux->si_interval = TSMUX_DEFAULT_SI_INTERVAL; mux->pcr_interval = TSMUX_DEFAULT_PCR_INTERVAL; mux->prog_map = NULL; mux->alignment = BASETSMUX_DEFAULT_ALIGNMENT; mux->bitrate = TSMUX_DEFAULT_BITRATE; mux->scte35_pid = DEFAULT_SCTE_35_PID; mux->scte35_null_interval = TSMUX_DEFAULT_SCTE_35_NULL_INTERVAL; mux->packet_size = GST_BASE_TS_MUX_NORMAL_PACKET_LENGTH; mux->automatic_alignment = 0; }